3D printer



FIG. 1 is a front right perspective view of a 3D printer showing the new design;

FIG. 2 is front left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The broken lines shown in the drawings depict portions of the 3D printer that form no part of the claimed design. 

CLAIM We claim the ornamental design for a 3D printer, as shown and described. 